I believe that govt plans in France are unfunded, I'm not sure about private plans though — unless they cover half the economy, unfunded private plans seems like a recipe for failure — structural economic changes could leave an industry fund with lots of liabilities and few paying members.

(Although speaking as an Australian whose contributions in the last 4 years are the only thing that stopped my balance moving downwards, maybe it's just replacing one evil with another)

The "other" category sort of obscures the facts here.
I tried to pull out that data myself but did not have enough time to figure out all the tricks with the database. I only got blank entries for Estonia, which however is represented on the chart. What struck me was the very low weight in equities there – I know that it must be much higher.
Overall, I'd be very careful comparing countries with very different pension systems.